Meanwhile, all the material remained available online.
When the final film version was released, almost none of Mr. Foote's original material remained.
Members of Dr. ElBaradei's staff and outside experts cautioned that the amount of missing material remained relatively small.
He added: "That said, it is still the case that Babel's KGB file was not lost, and a great deal of material remained intact.
The film cuts the characters back to three, but otherwise, Ms. Miller said, the material remained much as she conceived it.
Barely anything of the source material remained and, rather than creating something unique, Hollywood resorted to playing down the zombie aspect; instead splicing together two genres it already knows: the contagion thriller and the disaster movie.
The vibrancy of their early material remained intact: single Bonin' in the Boneyard welded its cemetery jollies to Ritalin-spiked horns, sampled dog-barks and a bassline that seemed to invent the Seinfeld theme a year early.
Clayton, who had thought all the papers were in the already vast archive kept in the Tate, was astonished at how much material remained uncatalogued and unstudied, including hundreds of letters, some of them scores of pages long.
The commerce department, in an email circulated to employees on Monday, said the WikiLeaks material remained classified and "is NOT authorised for downloading, viewing, printing, processing, copying or transmitting" on government computers or communication devices.
But Mr. Baker and Mr. Cutler agreed that one of their most worrisome findings was that no one seemed to know precisely how much fissile material remained in Russia.
It seemed to show that a substance could retain a particular biological activity even when it was diluted in water to a point where no molecules of the original material remained.
